[BUG] dart-dio generates invalid code for multi-line enum descriptions as of 7.25.0

[brettkail-wk]

Description

Multi-line x-enum-descriptions generates invalid code.

openapi-generator version

7.25.0 (regression from 7.24.0, which previously didn't include a description but produced working code).

OpenAPI declaration file content or url

openapi: 3.1.0

info:
  version: 1.0.0
  title: 'Example'

components:
  schemas:
    ExampleEnum:
      type: string
      enum:
        - v1
      x-enum-descriptions:
        - |
          line1
          line2

Generation Details

java -jar openapi-generator-cli-7.25.0.jar generate -i example.yaml -o example -g dart-dio

Steps to reproduce

Run generator, observe output is invalid:

class ExampleEnum extends EnumClass {

  /// line1
line2

  @BuiltValueEnumConst(wireName: r'v1')
  static const ExampleEnum v1 = _$v1;

Related issues/PRs

#24506

Suggest a fix